| General Flooring & Services LLP | | 2025 |
| Gentry Fire & Security Ltd | Extraterritorial | 2020 |
| Georgia TAN Limited | Other services | 2018 |
| Georgio’S Ltd | Energy | 2020 |
| Gilbert Commercial Properties Limited | Real estate | 1991 |
| GJ GA Homes Ltd | Real estate | 2026 |
| GJ GP Ltd | Education | 2021 |
| Glamour Grounds Ltd | Financial services | 2024 |
| Glenisters Limited | Health & social care | 2021 |
| Global Mobility Consultants Limited | Professional & scientific | 2021 |
| Globe House Properties Ltd | Real estate | 2013 |
| Gmeb Holdings Limited | Professional & scientific | 2010 |
| GMR IT Solutions Limited | Information & communication | 2014 |
| Gogetme Ltd | Wholesale & retail | 2021 |
| Gold Stones Hand Car Wash Ltd | Other services | 2020 |
| Gold Tree Consulting Ltd | Information & communication | 2010 |
| Goldcrest Drinks Limited | Wholesale & retail | 2011 |
| Golders Green (Finchley Road ) Limited | Real estate | 2018 |
| Goldfinch Jewellery Limited | Manufacturing | 2024 |
| Good AS Gold Tattoos Limited | Arts & recreation | 2021 |
| Gooding Hinton and Co Limited | Professional & scientific | 2021 |
| GP Construct (UK) Limited | Construction | 2016 |
| Grand View RTM Company Limited | Households | 2020 |
| Grandi Private Office Limited | Real estate | 2023 |
| Grange Villas Management Company Limited | Households | 2021 |
| Granite Connection Limited | Wholesale & retail | 1962 |
| Granshaw and Sons Limited | Construction | 2021 |
| Grant Bailey Art Direction Limited | Arts & recreation | 2012 |
| Grapevine (France) Limited | Real estate | 2001 |
| Grashy Holdings Ltd | Arts & recreation | 2026 |
| Graystream Limited | Administrative & support | 2010 |
| Grayswift Facilities Management Limited | Administrative & support | 2024 |
| GRC Funeral Services Ltd | Other services | 2022 |
| GRC Industrial Flooring Limited | Construction | 2004 |
| Great House Energy Centre Ltd | Energy | 2015 |
| Great Wheatley Cellar Door Limited | Extraterritorial | 2024 |
| Great Wheatley Farm Limited | Agriculture & fishing | 2019 |
| Great Wheatley Group Limited | Financial services | 2024 |
| Great Wheatley Vineyard Limited | Manufacturing | 2021 |
| Great Wheatley Wine Co. Limited | Manufacturing | 2019 |
| Green Light Special Risks Limited | Financial services | 2020 |
| Green Tech Industries Ltd | Manufacturing | 2022 |
| Greenacre Riviera Estates Limited | Real estate | 2020 |
| Greenacre Riviera Investments Limited | Real estate | 2020 |
| Greenacres Nurseries (Hockley) Limited | Agriculture & fishing | 1989 |
| Greenkey Systems Limited | Information & communication | 1994 |
| Greensward Financial Planning Limited | Financial services | 2024 |
| Greg Packer Practice Limited | Health & social care | 2010 |
| Grey Barn Ltd | Administrative & support | 2022 |
| Grosvenor Leep Ltd | Administrative & support | 2016 |
| Grotech Distribution Limited | Wholesale & retail | 2019 |
| Grotech Limited | Wholesale & retail | 2005 |
| GRT Music Group Limited | Arts & recreation | 2015 |
| GS Automotive Essex Ltd | Wholesale & retail | 2024 |
| Gsfa Limited | Wholesale & retail | 2021 |
| Gtec Electronics Limited | Information & communication | 2010 |
| GTK Building Contractors Limited | Construction | 2014 |
| Guaranteed Rent Group Limited | Real estate | 2024 |
| Guard Consultancy Ltd | Professional & scientific | 2024 |
| Gwiz 2 Limited | Construction | 2006 |
| Gwiz 3 Limited | Real estate | 2007 |
| Gwiz Limited | Construction | 2004 |
| H a Amos Limited | Administrative & support | 2021 |
| H D G Windows Limited | Construction | 2009 |
| H&L South East Essex Sports Ltd | Education | 2024 |
| Hadleigh Commercial Enterprises Limited | Wholesale & retail | 2002 |
| Hadleigh Park Cycles CIC | Wholesale & retail | 2019 |
| Hadleigh Polishing Limited | Professional & scientific | 2002 |
| Hadleigh Suite Limited | Hospitality | 2025 |
| Haggar Construction Ltd | Construction | 2006 |
| Haggar Holdings Limited | Financial services | 2021 |
| Haggar Limited | Construction | 2026 |
| Haggar Scaffolding Limited | Construction | 2025 |
| Hair There & Everywhere Hair & Beauty Ltd | Wholesale & retail | 2016 |
| Halesfield Energy Centre Ltd | Energy | 2015 |
| Hamlet Carpentry & Conversions Ltd | Construction | 2022 |
| Handpoint Limited | Information & communication | 2007 |
| Hanningfield Process Systems Limited | Manufacturing | 1993 |
| Happy Academy Limited | Extraterritorial | 2014 |
| Happy Gardens and Homes Limited | Administrative & support | 2024 |
| Happy Leisure Limited | Real estate | 2006 |
| Haralan Investments Limited | Real estate | 2004 |
| Harbour Financial LLP | | 2014 |
| Harkins Transport Solutions Ltd | Transport & logistics | 2025 |
| Harlcam Solutions Ltd | Financial services | 2024 |
| Harmony Haze Limited | Other services | 2019 |
| Hart Development and Construction Limited | Construction | 2013 |
| Harvester Drive Management Company Ltd | Households | 2020 |
| Harvey Rabbit LLP | | 2007 |
| Harveys Online Ltd | Other services | 2025 |
| HAT33 Ltd | Hospitality | 2025 |
| Hatton Garden Furniture Ltd | Wholesale & retail | 2023 |
| Hawkwell Heating Limited | Construction | 2024 |
| Hawkwell Pharmacy Limited | Wholesale & retail | 2008 |
| Hawkwell Restoration Ltd | Construction | 2024 |
| HB Architectural Sign Company Limited | Construction | 2011 |
| HBC Shop Trading Limited | Wholesale & retail | 2018 |
| HDM Projects Limited | Construction | 2026 |
| Headtex Limited | Information & communication | 1994 |
| Heart & Strategy DJ Consulting Ltd | Professional & scientific | 2025 |